Hello Thomas,
Note that SAPKB73107 is quite old. There are several corrections for the ITSmobile Visual Editor.
Here is a list of the notes that have corrections for SAPKB73107. (Personally, I would see whether importing a higher support package stack would be possible - then do it).
1818662 - ITSmobile Visual Editor: Improvements and corrections
1876462 - ITSmobile Visual Editor: Hide elements
1903390 - ITSmobile Visual Editor: Accelerated start, corrections
1927694 - ITSmobile Visual Editor: "Adapt to screen" does not work
2005958 - ITSmobile Visual Editor: Prerequisites for switching screens quickly
2051056 - ITSmobile Visual Editor: User changes are not always saved correctly
2057020 - ITSmobile Visual Editor: Adding or removing CSS properties is not possible
You should read each note and implement them, at your own discretion.
There are newer notes, but only available via Support Package.
I hope this helps,
Cris